The Quest for 700: Weekly GMAT Challenge

Each week Manhattan GMAT posts a GMAT question on our blog and follows up with the answer the next day. Are you up for the challenge?

Every digit of a number written in binary is either 0 or 1. To translate a number from binary, multiply the nth digit (reading from right to left) by 2n-1. For instance, 1101 = (1 × 23) + (1 × 22) + (0 × 21) + (1 × 20) = 25. What is the largest prime number (written in binary) that is a factor of both 100010000 and 1000100000 ?

(A) 10
(B) 11
(C) 101
(D) 1011
(E) 10001

onTrack by mbaMission

A first-of-its-kind, on-demand MBA application experience that delivers a personalized curriculum for you and leverages interactive tools to guide you through the entire MBA application process.

Get Started!

Upcoming Events

Upcoming Deadlines

  • Cambridge Judge (Round 1)
  • HBS (Round 1)
  • INSEAD (August Intake)
  • Yale SOM (Round 1)
  • Berkeley Haas (Round 1)

Click here to see the complete deadlines

2024–2025 MBA Essay Tips

Click here for the 2023–2024 MBA Essay Tips

MBA Program Updates

Explore onTrack — mbaMission’s newest offering allowing you to learn at your own pace through video. Learn more